<template>
  <div>
    <el-main>
      <!-- 查询条件 -->
      <el-form :model="searchModel" ref="searchForm" label-width="80px" :inline="true" size="small">
        <el-form-item>
          <el-input v-model="searchModel.roleName" placeholder="请输入角色名
  称" />
        </el-form-item>
        <el-form-item>
          <el-button type="primary" icon="el-icon-search" @click="search(pageNo, pageSize)">查询</el-button>
          <el-button icon="el-icon-refresh-right" @click="resetValue">重置
          </el-button>
          <el-button type="success" icon="el-icon-plus" @click="openAddWindow" v-if="hasPermission('sys:role:add')">新增</el-button>
        </el-form-item>
      </el-form>
      <!-- 数据表格 -->
      <el-table :data="roleList" :height="tableHeight" border stripe style="width: 100%; margin-bottom: 10px">
        <el-table-column prop="id" label="角色编号" width="100" align="center"></el-table-column>
        <el-table-column prop="roleCode" label="角色编码"></el-table-column>
        <el-table-column prop="roleName" label="角色名称"></el-table-column>
        <el-table-column prop="remark" label="角色备注"></el-table-column>
        <el-table-column label="操作" align="center" width="290">
          <template slot-scope="scope">
            <el-button icon="el-icon-edit" type="primary" size="small" @click="handleEdit(scope.row)" v-if="hasPermission('sys:role:edit')">编辑
            </el-button>
            <el-button icon="el-icon-delete" type="danger" size="small" @click="handleDelete(scope.row)" v-if="hasPermission('sys:role:delete')">删除
            </el-button>
            <el-button icon="el-icon-setting" type="primary" size="small" @click="assignRole(scope.row)" v-if="hasPermission('sys:role:assign')">分配权限
            </el-button>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页工具栏 -->
      <el-pagination background @size-change="handleSizeChange" @current-change="handleCurrentChange"
        :current-page="pageNo" :page-sizes="[10, 20, 30, 40, 50]" :page-size="10"
        layout="total, sizes, prev, pager, next, jumper" :total="total">
      </el-pagination>
    </el-main>

    <!-- 添加和修改角色窗口 -->
    <system-dialog :title="roleDialog.title" :visible="roleDialog.visible" :width="roleDialog.width"
      :height="roleDialog.height" @onClose="onClose" @onConfirm="onConfirm">
      <div slot="content">
        <el-form :model="role" ref="roleForm" :rules="rules" label-width="80px" :inline="false" size="small">
          <el-form-item label="角色编码" prop="roleCode">
            <el-input v-model="role.roleCode"></el-input>
          </el-form-item>
          <el-form-item label="角色名称" prop="roleName">
            <el-input v-model="role.roleName"></el-input>
          </el-form-item>
          <el-form-item label="角色描述">
            <el-input type="textarea" v-model="role.remark" :rows="5"></el-input>
          </el-form-item>
        </el-form>
      </div>
    </system-dialog>

    <!-- 分配权限树窗口 -->
    <system-dialog :title="assignDialog.title" :visible="assignDialog.visible" :width="assignDialog.width"
      :height="assignDialog.height" @onClose="onAssignClose" @onConfirm="onAssignConfirm">
      <div slot="content">
        <el-tree ref="assignTree" :data="assignTreeData" node-key="id" :props="defaultProps" empty-text="暂无数据"
          :show-checkbox="true" :highlight-current="true" default-expand-all></el-tree>
      </div>
    </system-dialog>

  </div>
</template>


<script>
  import SystemDialog from '@/components/system/SystemDialog.vue'
  import leafUtils from "@/utils/leaf";
  import {
    getRoles,
    addRole,
    updateRole,
    deleteRole,
    checkRole,
    getAssignTree,
    assignSave
  } from '@/api/role'


  export default {
    name: 'roleList',
    data() {
      return {

        //分配权限窗口属性
        assignDialog: {
          title: "",
          visible: false,
          height: 450,
          width: 300,
        },
        roleId: "", //角色ID
        assignTreeData: [], //树节点数据
        //树节点属性
        defaultProps: {
          children: "children",
          label: "label",
        },

        rules: {
          roleCode: [{
            required: true,
            trigger: 'blur',
            message: '请输入角色编码'
          }],
          roleName: [{
            required: true,
            trigger: 'blur',
            message: '请输入角色名称'
          }]
        },


        //添加和修改角色窗口属性
        roleDialog: {
          title: '',
          visible: false,
          height: 230,
          width: 500
        },


        //角色对象
        role: {
          id: "",
          roleCode: "",
          roleName: "",
          remark: "",
          createUser: this.$store.getters.userId
        },


        //查询条件
        searchModel: {
          roleName: '',
          pageNo: 1,
          pageSize: 10,
          userId: this.$store.getters.userId //用户ID
        },


        roleList: [], //数据列表
        tableHeight: 0, //表格高度
        pageNo: 1, //当前页码
        pageSize: 10, //每页显示数量
        total: 0, //总数量
      }


    },
    components: {
      SystemDialog
    },
    methods: {
      //分配权限窗口确认事件
      async onAssignConfirm() {
        let ids = this.$refs.assignTree.getCheckedKeys()
        //获取选中节点的父节点id
        let pids = this.$refs.assignTree.getHalfCheckedKeys()
        //组装选中的节点ID数据
        let listId = ids.concat(pids)
        //组装参数
        let params = {
          roleId: this.roleId,
          list: listId
        }
        //发送请求
        let res = await assignSave(params)
        //判断是否成功
        if (res.success) {
          //关闭窗口
          this.assignDialog.visible = false
          //提示成功
          this.$message.success(res.message)
        } else {
          //提示失败
          this.$message.error(res.data)
        }
      },


      //分配权限
      async assignRole(row) {
        //设置角色ID
        this.roleId = row.id;
        //构建参数
        let params = {
          roleId: row.id,
          userId: this.$store.getters.userId,
        };
        //发送查询请求
        let res = await getAssignTree(params);
        //判断是否成功
        if (res.success) {
          //获取当前登录用户拥有的所有权限
          let permissionList = res.data.permissionList;
          //获取当前被分配的角色已经拥有的权限信息
          let checkList = res.data.checkList;
          //判断当前菜单是否是末级
          let {
            setLeaf
          } = leafUtils();
          //设置权限菜单列表
          let newPermissionList = setLeaf(permissionList);
          //设置树节点菜单数据
          this.assignTreeData = newPermissionList;
          //将回调延迟到下次DOM更新循环之后执行,在修改数据之后立即使用它,然后等待DOM更新。
          this.$nextTick(() => {
            //获取树菜单的节点数据
            let nodes = this.$refs.assignTree.children
            this.setChild(nodes, checkList);
          });
        }
        //显示窗口
        this.assignDialog.visible = true;
        //设置窗口标题
        this.assignDialog.title = `给【${row.roleName}】分配权限`;
      },


      //设置子节点
      setChild(childNodes, checkList) {
        //判断是否存在子节点
        if (childNodes && childNodes.length > 0) {
          //循环所有权限
          for (let i = 0; i < childNodes.length; i++) {
            //根据 data 或者 key 拿到 Tree 组件中的 node
            let node = this.$refs.assignTree.getNode(childNodes[i]);
            //判断是否已经拥有对应的角色数据
            if (checkList && checkList.length > 0) {
              //循环遍历已有的权限集合
              for (let j = 0; j < checkList.length; j++) {
                //找到已经存在的菜单权限节点
                if (checkList[j] == childNodes[i].id) {
                  //如果节点是展开状态，则将树节点选中
                  if (childNodes[i].open) {
                    this.$refs.assignTree.setChecked(node, true);
                    break;
                  }
                }
              }
            }
            //如果存在子节点，则递归选中
            if (childNodes[i].children) {
              this.setChild(childNodes[i].children, checkList);
            }
          }
        }
      },


      //分配权限窗口取消事件
      onAssignClose() {
        this.assignDialog.visible = false;
      },


      //打开添加窗口
      openAddWindow() {
        //清空表单数据
        this.$resetForm("roleForm", this.role);
        this.roleDialog.title = '新增角色' //设置窗口标题
        this.roleDialog.visible = true //显示窗口
      },


      //窗口取消事件
      onClose() {
        this.roleDialog.visible = false
      },

      //窗口确认事件
      onConfirm() {
        //表单验证
        this.$refs.roleForm.validate(async (valid) => {
          if (valid) {
            let res = null;
            //判断角色ID是否为空
            if (this.role.id === "") {
              //新增
              //发送添加请求
              res = await addRole(this.role);
            } else {
              //发送修改请求
              res = await updateRole(this.role);
            }
            //判断是否成功
            if (res.success) {
              this.$message.success(res.message);
              //刷新
              this.search(this.pageNo, this.pageSize);
              //关闭窗口
              this.roleDialog.visible = false;
            } else {
              this.$message.error(res.message);
            }
          }
        });
      },


      // 打开编辑窗口
      handleEdit(row) {
        //数据回显
        this.$objCopy(row, this.role); //将当前编辑的数据复制到role对象中
        //设置窗口标题
        this.roleDialog.title = "编辑角色";
        //显示编辑角色窗口
        this.roleDialog.visible = true;
      },


      //删除
      async handleDelete(row) {
        //查询该角色是否被使用
        let result = await checkRole({
          id: row.id
        });
        //判断是否可以删除
        if (!result.success) {
          //提示不能删除
          this.$message.warning(result.message);
        } else {
          //确认是否删除
          let confirm = await this.$myconfirm("确定要删除该数据吗?");
          if (confirm) {
            //发送删除请求
            let res = await deleteRole({
              id: row.id
            });
            //判断是否成功
            if (res.success) {
              //成功提示
              this.$message.success(res.message);
              //刷新
              this.search(this.pageNo, this.pageSize);
            } else {
              //失败提示
              this.$message.error(res.message);
            }
          }
        }
      },



      //查询
      async search(pageNo = 1, pageSize = 10) {
        this.searchModel.pageNo = pageNo //当前页码
        this.searchModel.pageSize = pageSize //每页显示数量
        //发送查询请求
        let res = await getRoles(this.searchModel)
        //执行成功
        if (res.success) {
          //角色列表
          this.roleList = res.data.records
          //总数量
          this.total = res.data.total
        }
      },


      //重置查询条件
      resetValue() {
        //清空查询条件
        this.searchModel.roleName = ""
        //重新查询
        this.search()
      },


      //当每页数量发生变化时触发该事件
      handleSizeChange(size) {
        this.pageSize = size; //将每页显示的数量交给成员变量
        this.search(this.pageNo, size)
      },


      // 当页码发生变化时触发该事件
      handleCurrentChange(page) {
        this.pageNo = page
        //调用查询方法
        this.search(page, this.pageSize)
      },
    },

    //初始化时调用
    created() {
      //调用查询角色列表的方法
      this.search();
    },





    //挂载后调用
    mounted() {
      this.$nextTick(() => {
        this.tableHeight = window.innerHeight - 220
      })
    }
  }
</script>
<style lang="scss" scoped></style>
